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Pic of recesses of lesser sac

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Excellent! Here are the images and a complete explanation of the recesses of the lesser sac (omental bursa):

Recesses of the Lesser Sac (Omental Bursa)

Fig. 21.47 - Peritoneal Cavity Diagram (Grainger & Allison's Diagnostic Radiology)

Peritoneal cavity diagram showing lesser sac position
(A) Coronal diagram showing division of peritoneal cavity; (B) Midsagittal diagram - note ls = lesser sac lying posterior to the stomach (s), bounded anteriorly by the lesser omentum (lo) and posteriorly by the pancreas (p), above the root of transverse mesocolon (rtmc).

Fig. 4.41 - Topography of the Omental Bursa (Color Atlas of Human Anatomy)

Topography of omental bursa and pancreas
Panel A - Topography of the omental bursa (stomach and lesser omentum reflected superiorly):
LabelStructure
1Stomach (reflected, showing posterior wall)
2Pancreas (posterior wall of omental bursa)
3Papillary process of caudate lobe
4Gastropancreatic fold (divides vestibule from main cavity)
5Splenic recess (extending left between splenic ligaments and stomach)
6Inferior recess (extending downward between greater curvature and transverse colon)
ArrowOmental foramen (epiploic foramen of Winslow)
18Right lobe of liver

Recesses of the Lesser Sac - Summary

The omental bursa is subdivided into a vestibule and a main cavity with three named recesses:
  1. Superior recess - extends upward between the esophagus and inferior vena cava as far as the gastric fundus; surrounds the caudate lobe of the liver. It is separated from the inferior recess by the peritoneal reflection over the left gastric artery.
  2. Splenic recess (label 5 above) - extends to the left between the splenorenal and gastrosplenic ligaments toward the splenic hilum.
  3. Inferior recess (label 6 above) - the largest; extends downward between the greater curvature of the stomach and the transverse colon (within the layers of the greater omentum in early life).
The gastropancreatic fold (containing the left gastric artery) separates the vestibule from the main cavity. Entry to the entire bursa is via the single omental foramen (of Winslow), whose anterior wall is the hepatoduodenal ligament containing the portal triad.
Sources: Color Atlas of Human Anatomy Vol. 2 (Thieme), Fig. 4.41; Grainger & Allison's Diagnostic Radiology, Fig. 21.47

I want superior recess diagram

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These are excellent diagrams. Here they are:

Superior Recess of the Omental Bursa

Fig. 162.1 - Liver Surfaces & Peritoneal Recesses (Fischer's Mastery of Surgery)

Liver peritoneal recesses and ligaments
Panel C is the key view - posterior view of the liver showing the caudate lobe (highlighted in blue) which projects into the superior recess. The left triangular ligament forms the upper boundary of the superior recess, and the inferior vena cava lies to its right.

Fig. 162.2A - Sagittal Section showing the Superior Recess (Fischer's Mastery of Surgery)

Sagittal peritoneal cavity diagram
This is the most informative diagram for the superior recess. In Panel A (midsagittal section), the superior recess of the omental bursa is clearly labelled (top right, shown in blue), positioned:
  • Posteriorly behind the liver (above the caudate lobe)
  • Anteriorly bounded by the lesser omentum
  • Above the omental (epiploic) foramen
  • Behind the descending aorta and in front of the caudate lobe
The entire omental bursa (lesser sac) is shown in blue, with the superior recess extending upward toward the diaphragm/esophagus, clearly distinguished from the inferior recess (lower left, also labelled).

Key Points - Superior Recess

FeatureDetail
PositionBehind left lobe of liver, above caudate lobe
Upper boundaryLeft triangular ligament
Right boundaryIVC (ligament of inferior vena cava)
ContentsSurrounds/wraps around the caudate lobe
CommunicationOpens into vestibule via the gastropancreatic fold region
Surgical noteAccessible by dividing the left triangular ligament
The superior recess is smaller than the inferior recess and is separated from it by the peritoneal fold over the left gastric artery (gastropancreatic fold).
Source: Fischer's Mastery of Surgery 8th ed., Figs. 162.1 & 162.2
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